Tungsten Carbide Burrs for Tough Applications N ew 3R C S an ut pec d s ial 3R S Special Performance in Foundry, Shipbuilding and Steel Construction Applications New, innovative special cuts providing exceptional impact resistance. Highly rugged cut patterns minimize tooth chipping/breakage, splintering and burr head failures. Developed specifically for applications involving high impact loads, the new 3R and 3RS cuts are the latest addition to the existing PFERD range. Tungsten Carbide Burrs for Tough Applications New in the PFERD Range: Innovative High-Performance Cuts For heavy-duty applications in shipyards, foundries and steel construction, PFERD has developed two new special cut patterns for its tungsten carbide burrs. minimized. Even when milling at low RPM with an only moderately powerful machine, the occurrence of tooth failures is markedly reduced. The new 3R and 3RS cuts are the latest addition to the existing PFERD range. They are not intended as substitutes for our proven standard cuts for general-use burrs. The new 3R and 3RS cuts represent a new PFERD product line designed especially for tough operating conditions. These tungsten carbide burrs are characterized by their exceptional impact resistance and performance. The new cuts are ideal for all uses involving high mechanical shock or impact loads. Susceptibility to tooth chipping/breakage, splintering and burr head cracking has been effectively Like all other PFERD quality burrs, our 3R and 3RS cut types distinguish themselves by their perfectly matched tooth geometry, number of teeth, helix angle, rake angle, and concentricity. Thanks to a very high stock removal capability over the entire service life, these tools deliver outstanding results in minimum time. For the complete line of tungsten carbide burrs please refer to our PFERD Catalogue 202, which we shall be glad to send to you upon request! The new 3R and 3RS cut patterns minimize tooth breakage on tungsten carbide burrs Problem Chipping, tooth failures and major burr damage are sometimes encountered in applications involving high impact loads. Solutions and advantages Thanks to perfectly matched production parameters, the new 3R and 3RS cut patterns will substantially reduce tooth failures on tungsten carbide burrs. Cut 3R Tooth chipping / failure nCross cut. nCoarse and aggressive machining with high stock removal, even at low RPM. Cut 3RS nCross cut. nCoarse machining with smoother burr operation, even at low RPM. n Less aggressive than 3R cut. Distribution in single-burr packs Tungsten carbide burrs featuring the new 3R and 3RS cut patterns are supplied in singleunit packs. The proven plastic box ensures an optimum protection of burr teeth. For easy differentiation from the remaining product range, burrs with 3R and 3RS cuts are clearly marked with the word “New“ on the pack. 2 Tungsten Carbide Burrs for Tough Applications Recommendations for Use, Cut Patterns, Material Groups, Rotational Speeds Material Groups Application Non-hardened, non-heat treated steels up to 1200 N/mm² (< 35 HRC) Constructional steels Carbon steels Tool steels Non-alloyed steels Case-hardened steels, Steel castings Coarse machining = high stock removal with impact loading Hardened, heat-treated steels exceeding 1200 N/mm² (> 35 HRC) Tool steels Tempering steels Alloyed steels Steel castings Coarse machining = high stock removal with impact loading Cast iron Grey cast iron Spheroidal graphite cast iron Coarse machining = high stock removal with impact loading Recommended rotational speeds (RPM) for tungsten carbide burrs for tough applications See the table across for the recommended rotational speeds (RPM) of burrs in the various diameters. Note that optimum RPM is a function of the cutting rate (m/min) as indicated in the table. Example: Tungsten carbide burr, cut 3R, 12 mm head diameter, coarse machining of non-hardened and non heat-treated steels. Cutting rate: 250 - 600 m/min Rotational speed: 7,000 - 16,000 RPM Cut Recommended cutting rate 3R 250 - 600 m/min 3RS 250 - 600 m/min 3R 250 - 350 m/min 3RS 250 - 350 m/min 3R 250 - 600 m/min 3RS 250 - 600 m/min Cutting rate (m/min) m/min 250 300 8 10,000 12,000 14,000 10 8,000 10,000 12 7,000 8,000 16 5,000 6,000 Ø mm 350 450 500 600 18,000 20,000 24,000 11,000 14,000 16,000 19,000 9,000 12,000 13,000 16,000 7,000 9,000 10,000 12,000 Rotational speed (RPM) Safety notes = Wear safety goggles! = Use ear protection! = Observe safety recommendations! For safety reasons, tungsten carbide burrs with longer shafts must be operated at substantially lower RPM levels (refer also to page 7). Use only rigid clamping systems and power tools to avoid safety hazards! 3 Tungsten Carbide Burrs for Tough Applications Standard Shapes d1 Cylindrical ZYAS Cylindrical burr according to DIN 8032 (shape ZYAS) with circumferential. d2 l2 l1 Application Interior contour work, i.e., peripheral and face milling Ordering example ZYAS 0820/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 ZYAS 0820/6 ZYAS 1020/6 ZYAS 1225/8 769997 770023 770054 Shank dia. d2 [mm] Head dia. x length d 1 x l2 [mm] Overall length l1 [mm] 6 6 8 8 x 20 10 x 20 12 x 25 60 60 65 Shank dia. d2 [mm] Head dia. x length d 1 x l2 [mm] Overall length l1 [mm] 6 6 8 8 x 20 12 x 30 12 x 30 60 70 70 - 1 1 1 25 33 56 1 1 1 22 48 48 1 1 1 30 35 53 r Flame shape burr. d2 d1 Flame Shape B Application Contouring l2 l1 Ordering example B 0820/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 B 0820/6 B 1230/6 B 1230/8 770061 770085 770092 d1 Ball Shape KUD - d2 l2 l1 Ball-shaped burr according to DIN 8032 (shape KUD). Application Contouring Bore deburring Milling in preparation of build-up welding Bestellbeispiel KUD 1210/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 KUD 1210/6 KUD 1210/8 KUD 1614/8 4 770160 770177 770184 - Shank dia. d2 [mm] Head dia. x length d 1 x l2 [mm] Overall length l1 [mm] 6 8 8 12 x 10 12 x 10 16 x 14 50 50 54 Tungsten Carbide Burrs for Tough Applications Standard Shapes Cylindrical with Radius End WRC d1 d2 l2 l1 General-use shape (combination of cylindrical and spherical geometries) in accordance with DIN 8032 (shape WRC). Application Surface milling Contouring Ordering example WRC 0820/6 Z3R Order No. Available cuts 3R 3RS Shank dia. d2 [mm] Head dia. x length d1 x l2 [mm] Overall length l1 [mm] 6 6 6 8 8 x 20 10 x 20 12 x 25 12 x 25 60 60 65 65 Shank dia. d2 [mm] Head dia. x length d1 x l2 [mm] Overall length l1 [mm] 6 6 8 8 10 x 20 12 x 25 12 x 25 16 x 25 60 65 65 65 EAN 4007220 WRC 0820/6 WRC 1020/6 WRC 1225/6 WRC 1225/8 770108 770115 770122 769881 770139 770153 1 1 1 1 25 32 52 59 1 1 1 1 25 40 47 64 flattened tip Pointed Tree SPG d Bullet-shaped burr according to DIN 8032 (shape SPG). d2 1 l2 Application Work on narrow contours Milling of acute-angled surfaces l1 Ordering example SPG 1020/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 SPG 1020/6 SPG 1225/6 SPG 1225/8 SPG 1625/8 770252 770276 770283 770290 770269 770306 r d d2 1 Tree with Radius End RBF l2 Tree-shaped burr according to DIN 8032 (shape RBF). Application Work on narrow workpiece contours l1 Ordering example RBF 0820/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 RBF 0820/6 RBF 1020/6 RBF 1225/6 RBF 1225/8 770191 770207 770214 770221 770238 770245 Shank dia d2 [mm] Head dia. x length d1 x l2 [mm] Radius r [mm] Overall length l1 [mm] 6 6 6 8 8 x 20 10 x 20 12 x 25 12 x 25 1,2 2,5 2,5 2,5 60 60 65 65 1 1 1 1 21 28 43 49 5 Tungsten Carbide Burrs for Tough Applications Standard Shapes Taper burr with radius end according to DIN 8032 (shape KEL). Angle a = 14° α Conicalr with Radius End KEL d1 d2 Application Work on narrow workpiece contours and surfaces l2 l1 Ordering example KEL 1225/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 KEL 1225/6 KEL 1225/8 770320 770337 Radius r [mm] Overall length l1 [mm] 6 8 12 x 25 12 x 25 3,3 3,3 65 65 1 1 39 47 1 1 1 27 41 48 Oval burr according to DIN 8032 (shape TRE). r d1 d2 l2 l1 Application Contouring Ordering example TRE 1016/6 Z3R Order No. Available cuts 3R 3RS EAN 4007220 6 Head dia. x length d1 x l2 [mm] - Oval TRE TRE 1016/6 TRE 1220/6 TRE 1220/8 Shank dia. d2 [mm] 770344 770351 770368 770382 - Shank dia. d2 [mm] Head dia. x length d1 x l2 [mm] Radius r [mm] Overall length l1 [mm] 6 6 8 10 x 16 12 x 20 12 x 20 4,0 5,0 5,0 56 60 60 Tungsten Carbide Burrs for Tough Applications Long Shank Versions, Drive Spindle Extensions Long shank versions – available on request Tungsten Carbide Burrs with Special Shank Lengths Tungsten carbide burrs for tough applications are optionally available in 150 and 200 mm shank lengths. These tools are particularly well suited for use in hard-to-reach areas. Because of their hight impact-resistance characteristics they represent an optimum combination of a tungsten carbide burr and a long shank or shank extension, respectively. Shanks may also be cut to length by the user. Safety notes Special-length burrs and burrs with long shanks must be placed on the workpiece (or inserted in the bore or slot to be maschined) before the machine is powered up. As a rule, the tool ought to remain in contact with the workpiece for as long as the machine is running. Failure to observe this procedure may result in shank failure and hence, an increased accident risk For safety reasons, tungsten carbide burrs with longer shafts must be operated at substantially lower RPM levels. Use only rigid clamping systems and power tools, respectively, to avoid safety hazards! Drive spindle extensions For work in hard-to-reach areas (e.g., in pipes and ducting), burrs may also be combined with a spindle extension. The extension is mounted in the collet chuck of the machine (air-powered or electric), or in the handpiece of the flexible shaft. Extension SPV 100-8 144 13,5 8 Spindle extensions are a low-cost alternative to buying extra burrs. 871.00.357 Burr ZYA with shank extension SPV 100-8 EAN 4007220 Shank dia. [mm] Shank length [mm] Tool mount bore dia. [mm] Overall length [mm] 185261 8 30 6 144 Extension SPV 75-8 120 13 Applicable safety regulations and accident prevention rules must be duly observed when using drive spindle extensions! Extension for 6 mm shanks. n max. = 20,000 RPM including 6 mm collet, collet group 10, PFERD Tool Manual, Catalogue 209 30 Order No. Important! 8 871.00.358 115 Extension for 6 mm shanks. n max. = 20,000 RPM including 6 mm collet, collet group 10, PFERD Tool Manual, Catalogue 209 Burr ZYA with shank extension SPV 75-8 30 Order No. 1 EAN 4007220 Shank dia. [mm] Shank length [mm] Tool mount bore dia. [mm] Overall length [mm] 185278 8 30 6 120 1 90 7 Tungsten Carbide Burrs for Tough Applications Suitable Tool Drives An optimum match between tool and power source is a necessary condition for the costefficient use of PFERD rotary tools. Addressing diverse materials, workpieces and machining operations, PFERD offers a broad diversity of combination options based on three different tool drive systems: Straight air grinders PG 8/220 V-HV PG 10/200 V-HV Speed: Power: Speed: Power: 22,000 RPM 600 W 20,000 RPM 900 W Straight air grinders of lengthened design, with steel housing, are particularly suitable for heavy-duty milling in hard-to-reach spots. These machines provide accurate tool control. PFERD supplies straight air grinders which, in terms of output RPM, perfectly match the recommended cutting rates for our new special cut patterns. PG 10/160 V-HV PG 12/120 V-HV Speed: Power: Speed: Power: 16,000 RPM 900 W Printed in Germany. Air-powered machines Electric machines Flexible shaft drives. 12,000 RPM 1,000 W For further information and a full description of our entire range of tool drives please refer to our PFERD Tool Manual, Catalogue 209, and our “New in the PFERD Range - 2008” brochure. PG 8/50 V-HV Speed with oil: 16,000 RPM Speed without oil:370 W Power with oil: 13,000 RPM Power without oil:340 W Speed: Power: 5,000 RPM 600 W Straight electric grinders UGER 11/330 SI UGER 5/90 SI Speed: Power: Speed: Power: 15,000-33,000 RPM 650 W 04/2008 The output speeds (RPM) of these machines are variable either steplessly*¹ or in steps*². The overdrive unit ST 103, with its 1:3 transmission ratio, provides tool speeds of up to 36,000 RPM. PWS 5/160 HV 4,000-9,000 RPM 500 W 819 133 PFERD offers flexible shaft drives based on universal motors or three-phase a.c. machines designed for free-standing, suspended or mobile operation. Subject to technical modification. Powerful straight electric grinders with stepless speed control are ideally suited for mobile use thanks to their compact and rugged design. Flexible shaft drives*³ Multi-Speed Machine Mammoth Electronic ME 22/150*¹ Multi-Speed Machine Mammoth MD 10*² Multi-Speed Machine RUER 10/250 SI*² Speed: Power: Speed: Power: Speed: Power: 0-15,000 RPM 2,700 W 850-12,000 RPM 1,000 W 11,000-25,000 RPM 1,050 W *³ with flexible shaft Order No. 7 ZG DIN 10 10 ZG DIN 10 8 Illustration Rotational speed [RPM] Power [W] 11,000-25,000 800-1760 750-18,000 140-2450
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